Low herd immunity in Hong Kong may prolong flu season, experts warn after 6-year-old girl dies

Low vaccination rate may make it easier for dominating flu virus strain to shift, medical professors say.

Low herd immunity in Hong Kong may prolong flu season, experts warn after 6-year-old girl dies

Low herd immunity in Hong Kong may prolong flu season, experts warn after 6-year-old girl dies

Low herd immunity in Hong Kong may prolong flu season, experts warn after 6-year-old girl dies

Low herd immunity in Hong Kong may prolong flu season, experts warn after 6-year-old girl dies
Low herd immunity in Hong Kong may prolong flu season, experts warn after 6-year-old girl dies
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